... the article mentions 'work permits', so I wonder how that would affect English teachers? Mind you, when a similar problems was encountered before (i.e., the temporary abolition of the 'teacher visa') schools did manage around that somehow

Those under 18 years old, over 60 and students at accredited institutions, as well as qualified foreign specialists and their families will also be exempt from the new rules, set to go into force on Jan. 1, 2015.

One would assume that teachers would be classed as Foreign Specialists.
I'm a specialist in getting drunk and being foreign, so I'm pretty much safe.
Actually, I've given myself gastritis from drinking too much, so perhaps I am in danger of getting booted out.